符合標準EN55022 - B類標準意法半導體公司的EVLVIP17 - 5WCHG是5W開關電源（SMPS）設計，采用意法半導體公司的VIPER17HN，具有低待機功耗的特性，主要用作旅行電池充電器，如手機，掌上電腦和電子游戲的電池充電。充電器的輸(shu)入電(dian)(dian)壓為90 - 264Vac，頻率(lv)45 - 66Hz，輸(shu)出電(dian)(dian)壓5.1伏直(zhi)流(liu)± 2％，輸(shu)出電(dian)(dian)流(liu)1 ± 5％，電(dian)(dian)纜壓降補償(chang)（0.2V的/甲），無負載在(zai)高火線電(dian)(dian)壓的輸(shu)入功率(lv)低于100兆瓦，短路保護(hu)，并在(zai)短路故障(zhang)消除后(hou)自動重(zhong)起，印刷電(dian)(dian)路板尺寸為53 × 26毫(hao)米，安(an)全特性和EN60065兼容(rong)，電(dian)(dian)磁干擾滿(man)足標準EN5022 - B類標準。

     本文介紹了EVLVIP17 - 5WCHG主要特性，電路板外形圖以及詳細電路圖和所用材料清單（BOM）的。 EVLVIP17 - 5WCHG：5瓦的低待機功耗電池充電器演示板的基礎上VIPER17HN的EVLVIP17 - 5WCHG演示板是一個5瓦的作為，如移動電話，掌上電腦和電子游戲應用旅行使用開關電源。該(gai)委員會的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)是證明該(gai)VIPER17HN離線高電壓(ya)轉(zhuan)(zhuan)換器(qi)的(de)(de)(de)(de)(de)性能(neng)。其低(di)功(gong)(gong)耗(hao)(hao)和(he)其他特性，由(you)于良好的(de)(de)(de)(de)(de)電氣性能(neng)實現(xian)。為了(le)獲得恒(heng)定的(de)(de)(de)(de)(de)輸出電壓(ya)和(he)電流調(diao)節（簡歷/消(xiao)委會），TSM1052簡歷/消(xiao)委會控制(zhi)器(qi)上使用(yong)的(de)(de)(de)(de)(de)次要(yao)方(fang)(fang)面。這(zhe)TSM1052是非(fei)(fei)常適合(he)這(zhe)種(zhong)類(lei)型的(de)(de)(de)(de)(de)應(ying)用(yong)，提供了(le)一(yi)個(ge)非(fei)(fei)常小(xiao)的(de)(de)(de)(de)(de)封裝非(fei)(fei)常低(di)的(de)(de)(de)(de)(de)電流消(xiao)耗(hao)(hao)（采用(yong)SOT23 - 6L）。該(gai)轉(zhuan)(zhuan)換器(qi)實現(xian)了(le)一(yi)個(ge)反激拓撲結構，這(zhe)是理(li)想的(de)(de)(de)(de)(de)低(di)功(gong)(gong)耗(hao)(hao)，低(di)成(cheng)本的(de)(de)(de)(de)(de)隔離轉(zhuan)(zhuan)換器(qi)。在小(xiao)學方(fang)(fang)面，VIPER17HN使用(yong)。該(gai)IC是毒蛇(she)的(de)(de)(de)(de)(de)+家(jia)族，從它的(de)(de)(de)(de)(de)附加功(gong)(gong)能(neng)和(he)保護的(de)(de)(de)(de)(de)利益。此設備，設計(ji)采用(yong)了(le)一(yi)個(ge)多芯片方(fang)(fang)案，包括(kuo)一(yi)個(ge)先進的(de)(de)(de)(de)(de)電流模(mo)式(shi)PWM控制(zhi)器(qi)和(he)雪崩的(de)(de)(de)(de)(de)小(xiao)幅下降，7封裝堅固800 V的(de)(de)(de)(de)(de)功(gong)(gong)率MOSFET。該(gai)轉(zhuan)(zhuan)換器(qi)在連續和(he)非(fei)(fei)連續導電模(mo)式(shi)工程取決(jue)于輸入(ru)電壓(ya)（電路(lu)有一(yi)個(ge)范圍廣闊(kuo)的(de)(de)(de)(de)(de)輸入(ru)）和(he)輸出負載。

     該(gai)控制(zhi)器(qi)后綴為(wei)“H”規定(ding)，開關頻率是115千赫，內部(bu)固定(ding)的，允許的功率元件(jian)減少(shao)。應(ying)用程序設計，以降低整體元件(jian)數量(liang)和(he)適配器(qi)的成本。輸入部(bu)分包(bao)括一個浪涌電(dian)流限制(zhi)和(he)故障保護，arectifier橋，兩條(tiao)電(dian)解電(dian)容和(he)大量(liang)作為(wei)前電(dian)感(gan)熔(rong)斷電(dian)阻器(qi)高端AC - DC轉換器(qi)和(he)EMC濾波器(qi)。

    變壓(ya)(ya)(ya)器是(shi)一(yi)(yi)個層(ceng)類型，利用(yong)(yong)(yong)一(yi)(yi)個標準的(de)(de)(de)(de)(de)(de)(de)(de)EF12.6鐵氧體磁(ci)芯，并與(yu)大(da)約(yue)75 V電(dian)(dian)壓(ya)(ya)(ya)設計的(de)(de)(de)(de)(de)(de)(de)(de)反映(ying)。這個特點是(shi)變壓(ya)(ya)(ya)器繞(rao)組(zu)的(de)(de)(de)(de)(de)(de)(de)(de)技術，消除了常用(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)?1安(an)全電(dian)(dian)容器的(de)(de)(de)(de)(de)(de)(de)(de)需要(yao)之間的(de)(de)(de)(de)(de)(de)(de)(de)主要(yao)和(he)次(ci)要(yao)方面(mian)。一(yi)(yi)個RCD鉗位網絡用(yong)(yong)(yong)于(yu)漏感消磁(ci)。該電(dian)(dian)路的(de)(de)(de)(de)(de)(de)(de)(de)啟動(dong)是(shi)由內部管理，高(gao)壓(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)VIPER17HN啟動(dong)發電(dian)(dian)機。這條(tiao)賽(sai)道的(de)(de)(de)(de)(de)(de)(de)(de)典型匯3電(dian)(dian)流從(cong)漏極引腳和(he)收費內徑電(dian)(dian)容。這個電(dian)(dian)流值減少到0.6毫(hao)安(an)在有保障的(de)(de)(de)(de)(de)(de)(de)(de)干(gan)預，以提高(gao)試用(yong)(yong)(yong)期重新啟動(dong)，從(cong)而減少對永久(jiu)性故障的(de)(de)(de)(de)(de)(de)(de)(de)情況(kuang)下，功率器件(jian)的(de)(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)力(li)。為(wei)VIPER17HN電(dian)(dian)源(yuan)獲(huo)得自我供(gong)應(ying)從(cong)一(yi)(yi)激配置連接(jie)的(de)(de)(de)(de)(de)(de)(de)(de)變壓(ya)(ya)(ya)器繞(rao)組(zu)。該電(dian)(dian)路提供(gong)電(dian)(dian)壓(ya)(ya)(ya)，理想情況(kuang)下，直接(jie)成比例(li)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)。在實踐中，因為(wei)這是(shi)沒有Y型帽(mao)變壓(ya)(ya)(ya)器有很高(gao)的(de)(de)(de)(de)(de)(de)(de)(de)漏感，作為(wei)峰值初(chu)級電(dian)(dian)流增大(da)selfsupply電(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)增加。無論如何，由于(yu)廣泛內徑的(de)(de)(de)(de)(de)(de)(de)(de)VIPER17HN電(dian)(dian)壓(ya)(ya)(ya)范圍的(de)(de)(de)(de)(de)(de)(de)(de)情況(kuang)（從(cong)8.5 V至23五）正確的(de)(de)(de)(de)(de)(de)(de)(de)供(gong)應(ying)總是(shi)提供(gong)。內部MOSFET的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)流限制降低（從(cong)0.4的(de)(de)(de)(de)(de)(de)(de)(de)面(mian)值）通過使用(yong)(yong)(yong)電(dian)(dian)阻R16連接(jie)到續(xu)針(zhen)。

     有(you)(you)(you)了這個功(gong)(gong)能(neng)(neng)，IDlim定(ding)為280毫安，允許使(shi)用(yong)(yong)(yong)小型(xing)變(bian)壓(ya)(ya)(ya)器(qi)5 W輸(shu)出(chu)(chu)（EF12.6使(shi)用(yong)(yong)(yong)）在(zai)(zai)不飽和(he)的(de)(de)(de)(de)風險。分壓(ya)(ya)(ya)器(qi)的(de)(de)(de)(de)節電(dian)(dian)(dian)(dian)沒有(you)(you)(you)安裝（所(suo)以禁用(yong)(yong)(yong)此功(gong)(gong)能(neng)(neng)），以節省電(dian)(dian)(dian)(dian)能(neng)(neng)特(te)別是空(kong)載(zai)功(gong)(gong)耗(hao)。該VIPER17HN有(you)(you)(you)幾(ji)個內(nei)置的(de)(de)(de)(de)功(gong)(gong)能(neng)(neng)，如抖動，以減少(shao)電(dian)(dian)(dian)(dian)磁干擾的(de)(de)(de)(de)問題，軟啟動頻率(lv)，和(he)突(tu)發(fa)的(de)(de)(de)(de)低(di)功(gong)(gong)耗(hao)模(mo)式(shi)工作在(zai)(zai)輕負(fu)載(zai)和(he)無負(fu)載(zai)條件下。過流，過載(zai)和(he)過溫保(bao)護也是在(zai)(zai)內(nei)部(bu)實施，并保(bao)證董事會的(de)(de)(de)(de)安全運行(xing)。在(zai)(zai)中學方面，TSM1052恒(heng)壓(ya)(ya)(ya)恒(heng)電(dian)(dian)(dian)(dian)流（CV / CC）的(de)(de)(de)(de)控制器(qi)使(shi)用(yong)(yong)(yong)。在(zai)(zai)TSM1052和(he)光電(dian)(dian)(dian)(dian)二(er)(er)極(ji)管的(de)(de)(de)(de)光電(dian)(dian)(dian)(dian)耦合(he)器(qi)是直接供應的(de)(de)(de)(de)輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。其電(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)TSM1052（為1.7 V分鐘）電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)范圍內(nei)進行(xing)精確的(de)(de)(de)(de)恒(heng)定(ding)電(dian)(dian)(dian)(dian)流調節，即使(shi)輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)降(jiang)至1.5伏特(te)，1.6五(wu)，此范圍通常為所(suo)有(you)(you)(you)電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)器(qi)應用(yong)(yong)(yong)不夠。當輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)低(di)于(yu)這一(yi)限制電(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)監管，屬于(yu)損失(shi)，保(bao)護了口腔扁(bian)平(ping)(ping)苔蘚(xian)調用(yong)(yong)(yong)和(he)系(xi)統始(shi)于(yu)呃(e)逆模(mo)式(shi)下工作。如果由于(yu)某(mou)種原因，目(mu)前監管的(de)(de)(de)(de)需(xu)要到(dao)零輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)水平(ping)(ping)（即短(duan)路），它(ta)是足夠提(ti)供TSM1052和(he)帶有(you)(you)(you)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)等于(yu)輸(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)總和(he)，從TR1C電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)二(er)(er)極(ji)管纏繞在(zai)(zai)前進的(de)(de)(de)(de)方式(shi)糾正。有(you)(you)(you)關這一(yi)具體原理圖(tu)，請(qing)使(shi)用(yong)(yong)(yong)TSM1052見(jian)應用(yong)(yong)(yong)筆記AN2448（超小型(xing)電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)器(qi)更多信息）。

     R7的(de)(de)電(dian)(dian)(dian)阻(zu)器被(bei)添(tian)加(jia)到提供(gong)電(dian)(dian)(dian)纜(lan)壓降補(bu)償(chang)。較高(gao)的(de)(de)輸(shu)出(chu)電(dian)(dian)(dian)流(liu)，輸(shu)出(chu)電(dian)(dian)(dian)壓越高(gao)，對電(dian)(dian)(dian)路(lu)板的(de)(de)輸(shu)出(chu)端測量(liang)。這樣，對電(dian)(dian)(dian)纜(lan)連接的(de)(de)單位負(fu)(fu)載(zai)電(dian)(dian)(dian)壓降得到補(bu)償(chang)，同(tong)時提供(gong)給負(fu)(fu)載(zai)的(de)(de)電(dian)(dian)(dian)壓基(ji)本不變。更多的(de)(de)細節，因為r7同(tong)樣等于九(jiu)號，輸(shu)出(chu)電(dian)(dian)(dian)壓為增加(jia)0.2毫安的(de)(de)輸(shu)出(chu)電(dian)(dian)(dian)流(liu)壓。這一數(shu)額的(de)(de)基(ji)礎上選擇為這些應用程序(xu)（通常約(yue)為0.2-0.3Ω）典型的(de)(de)電(dian)(dian)(dian)纜(lan)電(dian)(dian)(dian)阻(zu)。